mm: track vma changes with VM_SOFTDIRTY bit

[linux.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index fd774c7cb4831be8817799ed6cab355a368fa19f..2d1e52a58fe91c76aecc2988d789adcbe8bcc32c 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -266,7 +266,7 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
        BUILD_BUG_ON(VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP);
        vma->vm_end = STACK_TOP_MAX;
        vma->vm_start = vma->vm_end - PAGE_SIZE;
-       vma->vm_flags = VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
+       vma->vm_flags = VM_SOFTDIRTY | VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
        vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
        INIT_LIST_HEAD(&vma->anon_vma_chain);